Will a 1964 9" axle fit under a 1968? Were the widths and spring perches the same?

 

Seem you have this in the wrong forum don't cha think so.

I'd think you would get a better respond by asking the guys with the earlier 64 yr trucks as they would be thinking about upgrading the rearend.

I'd think it's really all about upgrading. Instead of down grading to earlier older stuff?
My 2cents
Orich

 

I asked down there too. I just need a 9" for my trailer. Early/late doesn't matter as long as it will fit. I know the dentside axles are wider, but I don't know much about the slicks.

Plus, if it happens to have a 3.70-4.11 gear ratio, I need a set of those too!

 

Yes, I believe it will. It was 73 that the rear chassis was widened. Even then it is pretty easy to make them swap.


John

 

'67 and earlier F100s have slightly narrower 9-inch rear ends than 1968-1972 models. 1973-1979 9-inch rear ends are 4" wider (overall) than '68-'72.

'67 - earlier rear brakes are also narrower than '68-'72.

 

how much is slightly?

 

If this was a question about a 9-inch rear end for an early model Mustang, I could give you a much more definite answer.

There's a width difference between the '67 F100 9-inch rear vs. the 1968-1972 models. In doing a search, there's varying information on what the width is.

Some information suggests the (bare) housing widths (no axles or drums installed) are the same through 1972. If that's the case, then the narrower width would have to come from the lengths of the axles and drum brake assemblies.

The '67-earlier F-100 9-inch has 1-3/4" rear brake shoes. The '68-'72 brake shoe width is 2-1/4". This would be a difference of 0.5" per side or 1.00" overall.

If it's possible for you to measure the (bare) housing width and the axle shaft length of the '64 and do the same to a '68-'72, this will determine how much difference there is and if it's a housing width difference or if it's an axle and/or drum width difference.

 

gotcha, just so long as the housings are the same width. thats all i need. it can track an inch narrower... thanks

 

B7TZ-4234-A .. 9" Axle Shaft-28 splines - 1957/67 F100.

C8TZ-4234-A .. 9" Axle Shaft-28 splines - 1968/72 F100.

C8TZ-4234-B .. 9" Axle Shaft-31 splines - 1968/72 F100.

 

So we are up to 10 post in this thread, we find out that in 68 Ford increased the brake size that it retained until 86 when the 9in was dropped, and the chassis width changed in 73, but no one posted that a 64 would not bolt up under a 68 chassis. YEH!


John

 

The track width on the back of my 67 is 60 inches. Which is what the track width of 67 to 72's is. That is measured from tire center to tire center. I'm not sure what the track width of the previous generation is?

 

Back to 57, same.


John

 

I think the shock mounts will be different also.

 

So still nobody knows for sure huh? If I can find the time I'll drive out and get it anyway for the third member alone. But getting the whole thing to work would be much more useful to me.

 

I would just take a tape measure and check it out , best way.____JIM